Pedal mechanism for pneumatic piano-players.



2 SHEETS-SHEET 1.

Patented Aug. 25, 1914.

mm1/roi? :Fmi G A o/swfrs P.G.LYNDE. i PEDAL MEGHANISM FOR PNEUMATIG PIANO PLAYERS. APPLIGATION FILED PEB. 7, 1913 1, 1 08,452.

THE ADRRIS PETERS C0 Pimm-Linux, wAsHlNoroN. D. c.

P. G. LYNDE.

PEDAL MECHANISM FOB PNEUMATIG PIANO PLAYERS.

APPLICATION NLM) FEB. 7, 191s.

1,108,452. Patented Aug. 25, 1914 2 SHEETS-SHEET 2.

WITNESSES NVENTOH I SIL-MgAL THE .www5 PETERS co..PHo1o LlrNo.. WASHING mNA n. c.

UNITED srnrpsgriignnr OFFICE.

FRANK Gr. LYNDE, 0F NEWARK, NEW JERSEY, ASSIGNOR TO LAUTER CO.7 OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

PEDAL MECHANISM FOR PNEUMATIC PIANO-PLAYERS.

Specification of Letters Patent.

Patented Aug. 25, 1914.

T0 all fL/.iioiit it may concern,

Be it known that I, FRANK G. LYND'E, a citizen of the United States, residing in Newark, Essex county, State of New Jersey. have invented certain new and useful Improvements in Pedal Mechanism for vPneumatic Piano-Players, of which the following a specification, reference being had to the accoinpanying drawings, which form a part hereof.

'liis invention relates to the pumping or feed bellows operated by the feet of the performer for vthe purpose of exhausting air from the main bellows or equalizing reservoir.

lfhe object of the invention is to improve the construction and operation of such feed bellows and especially to provide improved means whereby the effective movement of the bellows oroduced by given movement of the operating pedal or whereby the movement of the operating pedal necessary to produce a given movement of the bellows can be varied to suit diiterent instruments or different performers.

'lhe invention will .be more fully eX- plaincd hereinafter with reference to the accompanying drawings in which two embodiments of the invention are illustrated ynd in which- Figure l is a View in front elevation of a part of the feed bellows with theiropcrut-ing pedals and connections. Fig. 2 is a detail view in section on the plane indicated by the line 9.--2 of Fig. l looking in the direction of the arrows. Figs. 3 and i nrc detailV views of parts to be referred to.

.lfhc en'ilmdiment of the invention as illustratt-zd in l""igs. l and Q includes a feeder bellows which has one member o* secured to a suitable support, and has its movable member a hinged to the fixed member upon a horizontal line. hc pedal Z is connected by a link c with a lever The latter is pivoted as at f3 and is connected at i ts opposite end by a link g with the movable member c5 of the bellows, preferably through an arm a which is pivoted upon the movable member of the bellows and is y' slotted at its other end for the passage of a threaded stud al provided with a clamping nut so that adjustment of the connection between the link y and the movable meml ber of the bellows can be effected. The link g is shown as pivotally connected to the movable member of the bellows and at its other end it is both pivotally and adjustably connected to the lever f2 which is slotted as at f* to receive a stud h2 which is mounted in the end of the link g and carries a bearing sleeve 7&3. The stud h2 is threaded and provided with a nut h4 and the sleeve r" may also be threaded and provided with a nut /r Preferably the lever arm f2 is secured to a shaft f3 which at its opposite end is provided with a similar arm f5, connected to thc movable member of the bellows on that side through a link q2 and, if desired, an adjusting arm a. The bellows is provided as usual with a collapsingI spring. In order to permit the resistance of this spring to be regulated easily there may be provided an adjusting lever 1, suitably pivoted as at Zz and connected at one end to the lever arm 7" through a spring At its other end it has connected thereto an adjustingr screw Zr", readily accessible, so that the tension of the springl f'f may be adjusted so to be .f'aried more or less. It will now be understood that by shifting the stud h2 toward the pivot of the lever ff', a smaller movement of the movable member of the bellows will be produced by given movement of the pedal and vice versa.

In Figs. l and 2 is indicated a supplemental clcsing means for the bellows7 which may be employed either in conjunction with the spring ,732, or independently thereof. The supplemental closing means is gravity operated and comprises a weight Z adjustably secured to an arm f, which is preferably integral with and angnlarly disposed to the lever f2. By means of a suitable set sfsrew Z the weight Z may be secured adjustably on the arm f to vary the effective closing leverage. It will be understood that such a gravity closing means is invariable in operation and when employed in conjunction with a spring insures the operation of the bellows even though the spring becomes inactive.

I claim as my invention l. A pedal mechanism comprising a pedal member, a swinging lever arm connected operatively to the pedal member, a second arm secured to the member actuated by the pedal and independent of the connection between thc lever arm and the pedal member, and a slot and stud connection between said arms to permit their relative adjustment whereby fm? n given ml@ of the pedal l L 0f Um u tuwitnessed I DE.

Cfmis 0i hs aten; ma be obtained for five cents each bv adessn' 'the Commissioner of Eatcns,

W'ashngwll, C. 

